Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a média anual de Melbourne?
 ###Tabelas: CREATE TABLE ranking_points (ranking_points_id AUTO_INCREMENT PRIMARY KEY, Finishing position VARCHAR, Points awarded (Platinum) INT, Points awarded (Gold) INT, Points awarded (Silver) INT, Points awarded (Satellite) INT) CREATE TABLE 2005-06_table (2005-06_table_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Played VARCHAR, Won VARCHAR, Drawn VARCHAR, Lost VARCHAR, Points for VARCHAR, Points against VARCHAR, Points difference VARCHAR, Points VARCHAR) CREATE TABLE goal_to_draw (goal_to_draw_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Team VARCHAR, Opponent VARCHAR, Year INT, Score VARCHAR) CREATE TABLE 2010_statistics_at_least_1000000_passengers (2010_statistics_at_least_1000000_passengers_id AUTO_INCREMENT PRIMARY KEY, Country VARCHAR, Airport VARCHAR, City VARCHAR, 2010 INT, Change (10/09) VARCHAR) CREATE TABLE competition_winners (competition_winners_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Amiga demo VARCHAR, PC demo VARCHAR, C64 demo VARCHAR, Amiga intro VARCHAR, PC intro VARCHAR)  
SELECT AVG Year FROM goal_to_draw WHERE Team = melbourne